My Ubuntu 10.10 on my laptop Lenovo T400 is not able to suspend or hibernate.
Whenever I click Suspend or Hibernate,
the moon LED on the bottom of the lid
flashes a few seconds, the screen
quickly shows something like "some
devices fail to suspend, error 5",
and then the moon LED goes off and
the display still has ambient light
illumination. I suppose in suspend or
hibernation state, the display should
have no illumination, just like when
the laptop is turned off, right?
If I press any key, the unlock screen
dialogue will pop out.
I searched a little on the internet, and installed 'acpi-support' according to some advice but it does not help. Any suggestions to solve this problem? Thanks and regards!
ADDED:
Laptop specifications:
CPU
Intel Mobile Core 2 Duo P8800 @ 2.66GHz
Penryn 45nm Technology
RAM
1.9GB Single-Channel DDR3 @ 532MHz (7-7-7-20)
Motherboard
LENOVO 2764CTO (None)
Graphics
ThinkPad Display 1440x900 @ 1440x900
ATI Mobility Radeon HD 3400 Series (Lenovo)
Hard Drives
244GB Western Digital WDC WD2500BEVS-08VAT2 (SATA)
Optical Drives
HL-DT-ST DVDRAM GSA-U20N
AZCDW EFCPUZ452 SCSI CdRom Device
AZCDW EFCPUZ452 SCSI CdRom Device
Audio
Conexant 20561 SmartAudio HD